Turbulence properties and kinetic signatures of electrons in Kelvin-Helmholtz waves during a geomagnetic storm
Daniel J. Gershman
The Kelvin–Helmholtz instability (KHI), in its nonlinear phase, plays a significant role in transporting solar-wind plasma into Earth’s magnetosphere. This study investigates the turbulence properties and reconnection signatures observed at the edges of Kelvin–Helmholtz vortices during a geomagnetic storm. Temporal spectra of the magnetic field, electric field, and bulk ion velocity exhibit power-law behavior with slope changes near the ion gyrofrequency, as well as a distinct spectral knee near